Battery cap, battery and electronic product

Abstract

The embodiment of the utility model provides a battery cap, a battery and an electronic product. The battery cover cap comprises a cover plate assembly and a battery cover, wherein the cover plate assembly is provided with a first through hole; the insulation part and the cover plate assembly are integrated through injection molding, and at least part of the insulation part is located in the first through hole; the insulation part is provided with a second through hole, and at least part of the fastening part is located in the second through hole; the fastening part is provided with a rotation stopping part, and the rotation stopping part is tightly matched with the insulating part.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of battery technology, and more specifically, to a battery cap, a battery, and an electronic product. Background Art

[0002] Lithium-ion batteries are rechargeable batteries that rely on the movement of lithium ions between a positive and negative electrode. Due to their compact size, light weight, high capacity, and environmentally friendly characteristics, lithium-ion batteries are widely used in industrial production and daily life.

[0003] Traditional lithium battery caps have poor sealing effects, which not only affects the performance and life of the battery, but may also pose a threat to safety.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0005] The purpose of this application is to provide a new technical solution for a battery cap, a battery, and an electronic product.

[0006] In a first aspect, the present application provides a battery cap. The battery cap comprises:

[0007] A cover plate assembly, wherein the cover plate assembly is provided with a first through hole;

[0008] an insulating portion, the insulating portion and the cover plate assembly being integrally injection-molded, and at least a portion of the insulating portion being located in the first through hole;

[0009] The fastening component is provided with a second through hole in the insulating portion, and at least a portion of the fastening component is located in the second through hole; the fastening component is provided with a rotation-stopping portion, and the rotation-stopping portion is tightly matched with the insulating portion.

[0010] Optionally, the fastening component includes a head and a rod, the rod passes through the second through hole, the rod is provided with a thread, and the anti-rotation portion is provided on a surface of the head close to the rod.

[0011] Optionally, the anti-rotation portion is a protrusion extending along the radial direction of the head, and the protrusion has a first surface and a second surface arranged opposite to each other along the circumferential direction of the head, the first surface is a guide surface, and the second surface is an anti-rotation surface.

[0012] Optionally, a plurality of anti-rotation parts are provided on the head, wherein in every two adjacent anti-rotation parts, the guide surface of one anti-rotation part and the anti-rotation surface of the other anti-rotation part are arranged opposite to each other.

[0013] Optionally, the first surface is an inclined surface, and the second surface is a vertical surface.

[0014] Optionally, an operating portion is provided on a surface of the head portion facing away from the rod portion, and the fastening component is rotated by the operating portion.

[0015] Optionally, the cover plate assembly includes a first cover plate and a second cover plate, the first cover plate and the second cover plate are welded, and a chamber is formed between the first cover plate and the second cover plate; the first cover plate is provided with a first sub-through hole, and the second cover plate is provided with a second sub-through hole, and the first sub-through hole is connected to the second sub-through hole.

[0016] Optionally, the insulating portion includes a first insulating portion and a second insulating portion, the first insulating portion and the second insulating portion are connected and form a receiving groove, and at least a portion of the second cover plate is located in the receiving groove;

[0017] At least a portion of the first insulating portion fills the cavity, and the second insulating portion is located outside the cavity and abuts against the fastening component.

[0018] In a second aspect, an embodiment of the present application further provides a battery, wherein the battery includes the battery cap as described in the first aspect.

[0019] In a second aspect, an embodiment of the present application further provides an electronic product comprising the battery as described in the second aspect.

[0020] According to the embodiment of the present application, by injection molding the insulating portion and the fastening component with the anti-rotation portion into one piece, it is ensured that the battery cap can maintain a stable connection state during use and also ensure the sealing of the battery cap during use.

[0021] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0023] Figure 1 Shown is a structural diagram of a battery cap provided in an embodiment of the present application from one perspective.

[0024] Figure 2 Shown is a structural diagram of the battery cap provided in an embodiment of the present application from another perspective.

[0025] Figure 3 The figure shows the structural breakdown of the battery cap provided in the embodiment of the present application. Figure 1 .

[0026] Figure 4 The figure shows the structural breakdown of the battery cap provided in the embodiment of the present application. Figure 2 .

[0027] Figure 5 Shown is a structural cross-sectional view of a battery cap provided in an embodiment of the present application.

[0028] Figure 6 Shown is a structural diagram of the fastening component provided in an embodiment of the present application.

[0029] Figure 7 Shown is an installation diagram of the cover assembly and the insulating part of an embodiment of the present application.

[0030] Description of reference numerals:

[0031] 1. Cover plate assembly; 10. First through hole; 11. First cover plate; 12. Second cover plate;

[0032] 2. Insulating portion; 20. Second through hole; 21. First insulating portion; 22. Second insulating portion; 23. Accommodating groove;

[0033] 3. Fastening component; 31. Head; 311. Anti-rotation portion; 312. Operating portion; 32. Rod; 321. Thread; 3111. First surface; 3112. Second surface; DETAILED DESCRIPTION

[0034] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0036] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0037] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0038] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0039] The embodiment of the present application provides a battery cap, which ensures the overall sealing of the battery cap by injection-molding an insulating portion 2 and a fastening component 3 with a rotation-stopping portion 311 into one piece.

[0040] Reference Figure 1-Figure 5 The battery cap includes: a cover assembly 1, the cover assembly 1 is provided with a first through hole 10; an insulating portion 2, the insulating portion 2 and the cover assembly 1 are injection-molded as one piece, and at least a portion of the insulating portion 2 is located in the first through hole 10; a fastening component 3, the insulating portion 2 is provided with a second through hole 20, and at least a portion of the fastening component 3 is located in the second through hole 20; the fastening component 3 is provided with a stop portion 311, and the stop portion 311 is tightly fitted with the insulating portion 2.

[0041] In the examples of this application, refer to Figure 1-Figure 5 The battery cap includes a cover assembly 1, an insulating part 2 and a fastening component 3. The fastening component 3 is connected to the cover assembly 1 through the insulating part 2, wherein the insulating part 2 is located between the cover assembly 1 and the fastening component 3 to isolate the cover assembly 1 and the fastening component 3.

[0042] The cover plate assembly 1 is used to be sealed with the open end of the battery housing to cover and protect the battery. For example, the cover plate assembly 1 can be made of steel.

[0043] In this embodiment, the insulating portion 2 and the cover assembly 1 are integrally formed via injection molding, meaning they are joined together during the same manufacturing process. For example, the insulating portion 2 can be made of materials including, but not limited to, PP, PVDF, and fluororubber. This integrated molding process allows the insulating portion 2 and the cover assembly 1 to form a single unit, enhancing the overall stability and connection reliability of the cover assembly 1 and the insulating portion 2, making the battery cap safer and more reliable during use.

[0044] The insulating portion 2 is at least partially located within the first through-hole 10. This is done to ensure electrical isolation around the first through-hole 10, preventing unintended current flow out of or into the area and enhancing safety during use. A second through-hole 20 is also defined in the insulating portion 2 to allow the fastening component 3 to pass through, creating insulation from the cover assembly 1 and facilitating connection with internal battery components.

[0045] In this embodiment, reference Figure 3 and Figure 6, a stopper 311 is provided on the fastening component 3. The design of the stopper 311 is to ensure that the fastening component 3 will not rotate or move at will after being fixed, thereby increasing the stability and safety of the connection. The stopper 311 is tightly fitted with the insulating part 2, that is, the fit between them is very tight, with almost no gap, which can prevent the fastening component 3 from loosening or displacement during use, and also improves the sealing of the cap assembly. For example, the fastening component 3 passes through the second through hole 20 and is connected to the insulating part 2. The fastening component 3 will squeeze the insulating material on the side wall of the second through hole 20 to form a seal. For example, the material of the fastening component 3 can be aluminum.

[0046] Therefore, in this embodiment of the present application, the design of the battery cap not only takes into account battery protection and current leakage prevention, but also focuses on connection stability and security. The integrally injection-molded insulating portion 2 and the fastening component 3 with the anti-rotation portion 311 ensure that the battery cap maintains a stable connection and a tight seal during use.

[0047] In one embodiment, referring to Figure 3 and Figure 6 The fastening component 3 includes a head 31 and a rod 32, the rod 32 is provided with a thread 321, the rod 32 passes through the second through hole 20 and abuts against the hole wall of the second through hole 20, and the surface of the head 31 close to the rod 32 is provided with the anti-rotation portion 311, and the anti-rotation portion 311 abuts against the lower surface of the insulating portion 2.

[0048] In this embodiment, the fastening component 3 includes a head 31 and a stem 32 . For example, the fastening component 3 is similar to a bolt structure.

[0049] The head 31 of the fastening component 3 is typically in the shape of a circular pancake. A stopper 311 is provided on the surface of the head 31 near the stem 32. This prevents the fastening component 3 from rotating in the opposite direction during rotation. The stopper 311 abuts the lower surface of the insulating portion 2 (due to the material characteristics of the insulating portion 2, the stopper 311 will squeeze the insulating portion 2, causing deformation). This limits the rotation angle and direction of the head 31 through friction or other means, ensuring that the fastening component 3 is precisely fixed in the desired position.

[0050] Specifically, the provision of the rotation stop 311 limits the rotation angle and direction of the fastening component 3, preventing loosening due to vibration or other external forces, and improving the stability of the connection. Therefore, the provision of the rotation stop 311 on the head 31 is a key point in achieving a secure connection between the fastening component 3 and the insulating portion 2. This secure connection between the fastening component 3 and the insulating portion 2 also improves the sealing between the cover assembly 1 and the fastening component 3.

[0051] The rod 32 of the fastening component 3 is typically cylindrical in shape. The rod 32 is provided with threads 321 and extends through the second through-hole 20. During rotation of the fastening component 3, friction is generated between the threads 321 of the rod 32 and the sidewalls of the second through-hole 20 (due to the material characteristics of the insulating portion 2, the inner wall of the second through-hole 20 will deform during rotation of the rod 32). This ensures a tight fit between the rod 32 and the inner wall of the second through-hole 20, preventing loosening or slipping.

[0052] Specifically, since the rod 32 is made of metal and the insulating part 2 is made of rubber, the performance of the two is quite different. During the rotation of the rod 32 with the thread 321 in the second through hole 20, the rod 32 and the inner wall of the second through hole 20 generate a large friction force. The provision of the thread 321 on the rod 32 is another key point to achieve a firm connection between the fastening component 3 and the insulating part 2. Through the firm connection between the fastening component 3 and the insulating part 2, the sealing between the cover assembly 1 and the fastening component 3 is further improved.

[0053] In one embodiment, referring to Figure 6 The anti-rotation portion 311 is a protrusion extending along the radial direction of the head 31. The protrusion has a first surface 3111 and a second surface 3112 arranged opposite to each other along the circumferential direction of the head 31. The first surface 3111 is a guide surface, and the second surface 3112 is an anti-rotation surface.

[0054] In this embodiment, the anti-rotation portion 311 is a structure used to prevent the fastening component 3 from rotating. The anti-rotation portion 311 is designed as a protrusion extending in the radial direction of the head 31. This means that the protrusion extends outward from the center of the head 31, forming a certain distance from the surface of the head 31. This design effectively abuts the insulating portion 2, that is, the anti-rotation portion 311 presses against the insulating portion 2 to prevent the fastening component 3 from rotating in the opposite direction.

[0055] The protrusion has two main surfaces (a first surface 3111 and a second surface 3112) which are arranged opposite to each other along the circumferential direction of the head 31. This means that the two surfaces are opposite, one surface is one side of the protrusion and the other surface is the other side of the protrusion.

[0056] The first surface 3111 of the raised portion is a guide surface, which may be a smooth, inclined surface for providing guidance when the head 31 contacts the insulating portion 2 .

[0057] The second surface 3112 of the raised portion is a rotation-stopping surface, which is another major surface of the raised portion and is designed to prevent rotation of the head 31. The rotation-stopping surface can be a roughened, perpendicular surface or a roughened surface at a certain angle to the surface of the head 31. When the head 31 contacts the insulating portion 2, the rotation-stopping surface interacts with it to provide stable support and prevent reverse rotation of the fastening component 3.

[0058] In one embodiment, referring to Figure 3 and Figure 6 A plurality of anti-rotation parts 311 are provided on the head 31, wherein in each adjacent two anti-rotation parts 311, the guide surface of one anti-rotation part 311 and the anti-rotation surface of the other anti-rotation part 311 are arranged opposite to each other.

[0059] In this embodiment, a plurality of anti-rotation portions 311 are provided on the head 31. This design is generally used to increase the stability and reliability of the anti-rotation effect, ensuring that the head 31 is not prone to reverse rotation when subjected to external force.

[0060] Among every two adjacent anti-rotation parts 311, the guide surface of one anti-rotation part 311 and the anti-rotation surface of the other anti-rotation part 311 are arranged opposite to each other.

[0061] Assuming that there are adjacent anti-rotation parts A, B and C, the guide surface of A will face the anti-rotation surface of B, the guide surface of B will face the anti-rotation surface of C, and the guide surface of C will face the anti-rotation surface of A.

[0062] Because the guide surface of A faces the anti-rotation surface of B, the guide surface of B faces the anti-rotation surface of C, and the guide surface of C faces the anti-rotation surface of A, a closed, circular anti-rotation system is formed. This design ensures that no matter which direction the head 31 is attempted to rotate, it will be effectively resisted by at least one anti-rotation part 311.

[0063] The stability of the head 31 of the fastening member 3 is greatly enhanced by the cyclic interaction between the multiple anti-rotation parts 311. Compared with the design with only one or two anti-rotation parts 311, this design is more resistant to rotational forces from different directions, so that the head 31 is more firmly held in the desired position.

[0064] In one embodiment, the first surface 3111 is an inclined surface, and the second surface 3112 is a vertical surface.

[0065] In this embodiment, the guide surface is designed as an inclined surface, which primarily serves to guide the fastening component 3 during rotation. Due to the presence of the inclined surface, when the head 31 contacts the insulating portion 2, the inclined surface will first contact and act as a guide, allowing the fastening component 3 to rotate more smoothly.

[0066] The anti-rotation surface is designed to be a plane perpendicular to the surface of the head 31. Its main function is to provide a stable anti-rotation effect and form a stable supporting surface, thereby preventing the head 31 from rotating in the opposite direction under the action of the rotational force.

[0067] The vertical surface can provide a stronger force to resist rotation because the vertical surface forms a direct, non-deformable contact surface between the head 31 and the insulating portion 2. This design ensures that the head 31 can maintain a stable position when subjected to external forces.

[0068] When multiple anti-rotation parts 311 are provided on the head 31, the inclined surface and vertical surface of each anti-rotation part 311 are arranged opposite to the corresponding surfaces of the adjacent anti-rotation part 311. This design ensures that no matter which direction the head 31 is subjected to rotational force, at least one anti-rotation part 311 will provide an effective anti-rotation effect.

[0069] In one embodiment, referring to Figure 2 An operating portion 312 is provided on the surface of the head portion 31 facing away from the rod portion 32 , and the fastening component is rotated by the operating portion 312 .

[0070] In this embodiment, the operating portion 312 can be a handle, a knob, a raised edge or a groove for the user to rotate. When designing the operating portion 312, its strength and durability need to be taken into consideration to ensure that it is not easily damaged during long-term use.

[0071] In one embodiment, referring to Figure 4 、 Figure 5 and Figure 7 The cover plate assembly 1 includes a first cover plate 11 and a second cover plate 12. The first cover plate 11 and the second cover plate 12 are welded to form a chamber between the first cover plate 11 and the second cover plate 12. The first cover plate 11 is provided with a first sub-through hole, and the second cover plate 12 is provided with a second sub-through hole. The first sub-through hole is connected to the second sub-through hole.

[0072] In this embodiment, the first cover plate 11 and the second cover plate 12 are connected together by welding, which provides a strong structural strength.

[0073] When the first cover plate 11 and the second cover plate 12 are welded together, a cavity is formed between them. The first sub-through hole in the first cover plate 11 and the second sub-through hole in the second cover plate 12 are connected through this cavity, so that the insulating portion 2 is located within the cavity, ensuring electrical isolation around the first through hole 10, preventing accidental current flow out of or into this area, and improving safety during use.

[0074] In one embodiment, referring to Figure 7 The insulating portion 2 includes a first insulating portion 21 and a second insulating portion 22 , wherein the first insulating portion 21 and the second insulating portion 22 are connected and form a receiving groove 23 , and at least a portion of the second cover plate 12 is located in the receiving groove 23 ;

[0075] At least a portion of the first insulating portion 21 fills the cavity, and the second insulating portion 22 is located outside the cavity and abuts against the fastening component.

[0076] In this embodiment, the first insulating portion 21 at least partially fills the cavity formed by the first cover plate 11 and the second cover plate 12. This design ensures that the interior of the cavity is well insulated and protected, avoiding possible electrical leakage or short circuit problems.

[0077] The second insulating portion 22 is connected to the first insulating portion 21 to form a receiving groove 23 for accommodating at least part of the second cover plate 12. This design not only provides an additional insulating layer but also ensures a stable connection between the second cover plate 12 and the insulating portion 2.

[0078] The present application also provides a battery, which includes the battery cap described above, and the battery includes but is not limited to a button battery.

[0079] The battery comprises a battery case, a battery cell, and a battery cap. The battery case is open at at least one end, the battery cell is disposed within the battery case, and the battery cap seals the open end of the battery case. The battery cap may be of any of the aforementioned structures. This battery has the characteristics of reliable sealing and high energy density.

[0080] The present application also provides an electronic product including the battery described above, such as an electronic device including but not limited to headphones, tablet computers, wearable devices, etc.

[0081] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0082] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present application. It should be understood by those skilled in the art that the above examples may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A battery cap, characterized in that: include: A cover plate assembly (1), wherein the cover plate assembly (1) is provided with a first through hole (10); an insulating portion (2), the insulating portion (2) being integrally formed by injection molding with the cover plate assembly (1), and at least a portion of the insulating portion (2) being located in the first through hole (10); A fastening component (3), the insulating part (2) is provided with a second through hole (20), at least part of the fastening component (3) is located in the second through hole (20); the fastening component (3) is provided with a rotation-stopping part (311), and the rotation-stopping part (311) is tightly matched with the insulating part (2).

2. The battery cap according to claim 1, characterized in that: The fastening component (3) comprises a head portion (31) and a rod portion (32); the rod portion (32) passes through the second through hole (20) and abuts against the hole wall of the second through hole (20); the head portion (31) is provided with a stop portion (311) on a surface close to the rod portion (32); the stop portion (311) abuts against the lower surface of the insulating portion (2).

3. The battery cap according to claim 2, characterized in that: The anti-rotation portion (311) is a protrusion extending in the radial direction of the head (31), and the protrusion has a first surface (3111) and a second surface arranged opposite to each other in the circumferential direction of the head (31), the first surface (3111) being a guide surface, and the second surface being an anti-rotation surface.

4. The battery cap according to claim 3, characterized in that: A plurality of anti-rotation parts (311) are arranged on the head (31), wherein in each adjacent two anti-rotation parts (311), the guide surface of one anti-rotation part (311) and the anti-rotation surface of another anti-rotation part (311) are arranged opposite to each other.

5. The battery cap according to claim 3, characterized in that: The first surface (3111) is an inclined surface, and the second surface (3112) is a vertical surface.

6. The battery cap according to claim 2, characterized in that: An operating portion (312) is provided on a surface of the head portion (31) facing away from the rod portion (32), and the fastening component (3) is rotated by means of the operating portion (312).

7. The battery cap according to claim 1, characterized in that: The cover plate assembly (1) comprises a first cover plate (11) and a second cover plate (12); the first cover plate (11) and the second cover plate (12) are welded, and a chamber is formed between the first cover plate (11) and the second cover plate (12); the first cover plate (11) is provided with a first sub-through hole, and the second cover plate (12) is provided with a second sub-through hole, and the first sub-through hole is connected to the second sub-through hole.

8. The battery cap according to claim 7, characterized in that: The insulating portion (2) comprises a first insulating portion (21) and a second insulating portion (22), the first insulating portion (21) and the second insulating portion (22) are connected and form a receiving groove (23), and at least a portion of the second cover plate (12) is located in the receiving groove (23); At least a portion of the first insulating portion (21) fills the cavity, and the second insulating portion (22) is located outside the cavity and abuts against the fastening component.

9. A battery, characterized in that: The battery comprises the battery cap according to any one of claims 1-8.

10. An electronic product, characterized in that: The electronic product comprises the battery as claimed in claim 9.

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